Journal of Qufu Normal University

The Enatanglement Evolution of Two Entangled Two-level Atoms under Two Cases

Gao De-ying

Published Jan 1, 2009• 0 citations

Abstract

By the negativity method,we investigate the entanglement time evolution of two entangled two-level atoms that go through the high Q fields in the fock state one by one. The results show that initial states of the two atom and the field in the fock state have influences on the entanglement of two states and the two-atom quantum state will stay the largest entangled state longer when the initial condition is proper. Then we compare it with the two atoms' entanglement evolution in the condition that the two atoms are laid in QED at the same time. The results show that when the parameters θπ/2,the evolution of the entanglement is similar,whil θπ/2e,the evolution of the entanglement is different.

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